Researchers Billy Bob Brumley and Nicola Tuveri have used a "timing attack" to calculate the secret key of a TLS/SSL server which uses the Elliptic Curve DSA. The attack is based on the idea that the time required for performing a multiplication allows conclusions to be drawn about the multiplication's operands.

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You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump